Zobrazeno 1 - 10
of 60
pro vyhledávání: '"N. E. J. Bjerrum-Bohr"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-22 (2023)
Abstract We introduce a novel bootstrap method for heavy-mass effective field theory classical Compton scattering amplitudes involving two massless particles and two arbitrary-spin infinite-mass limit particles. Using a suitable ansatz, we deduce new
Externí odkaz:
https://doaj.org/article/dd8aebe2cf80443a811e08d1fbbafbb2
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-20 (2019)
Abstract Using the CHY-formalism and its extension to a double cover we provide covariant expressions for tree-level amplitudes with two massive scalar legs and an arbitrary number of gravitons in D dimensions. Using unitarity methods, such amplitude
Externí odkaz:
https://doaj.org/article/7890501e9be1456884d77e264673035d
Publikováno v:
J.Phys.A
J.Phys.A, 2022, 55 (44), pp.443014. ⟨10.1088/1751-8121/ac7a78⟩
J.Phys.A, 2022, 55 (44), pp.443014. ⟨10.1088/1751-8121/ac7a78⟩
The post-Minkowskian expansion of Einstein's general theory of relativity has received much attention in recent years due to the possibility of harnessing the computational power of modern amplitude calculations in such a classical context. In this b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32035111c2591a5020f6b16dd2aadfe8
https://doi.org/10.1088/1751-8121/ac7a78
https://doi.org/10.1088/1751-8121/ac7a78
Publikováno v:
Agerskov, J, Bjerrum-Bohr, N E J, Gomez, H & Lopez-Arcos, C 2020, ' One-loop Yang-Mills integrands from scattering equations ', Physical Review D, vol. 102, no. 4, 045023 . https://doi.org/10.1103/PhysRevD.102.045023
Physical Review
Physical Review
We investigate in the context of the scattering equations, how one-loop linear propagator integrands in gauge theories can be linked to integrands with quadratic propagators using a double forward limit. We illustrate our procedure through examples a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e13cfb6bf158bb0e71977cb9eb91a51
https://doi.org/10.1103/physrevd.102.045023
https://doi.org/10.1103/physrevd.102.045023
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2019, 100, pp.084040. ⟨10.1103/PhysRevD.100.084040⟩
Cristofoli, A, Bjerrum-Bohr, N E J, Damgaard, P H & Vanhove, P 2019, ' Post-Minkowskian Hamiltonians in general relativity ', Physical Review D, vol. 100, no. 8, 084040 . https://doi.org/10.1103/PhysRevD.100.084040
Physical Review
Physical Review D, 2019, 100, pp.084040. ⟨10.1103/PhysRevD.100.084040⟩
Physical Review D, American Physical Society, 2019, 100, pp.084040. ⟨10.1103/PhysRevD.100.084040⟩
Cristofoli, A, Bjerrum-Bohr, N E J, Damgaard, P H & Vanhove, P 2019, ' Post-Minkowskian Hamiltonians in general relativity ', Physical Review D, vol. 100, no. 8, 084040 . https://doi.org/10.1103/PhysRevD.100.084040
Physical Review
Physical Review D, 2019, 100, pp.084040. ⟨10.1103/PhysRevD.100.084040⟩
We describe the computation of post-Minkowskian Hamiltonians in General Relativity from scattering amplitudes. Using a relativistic Lippmann-Schwinger equation, we relate perturbative amplitudes of massive scalars coupled to gravity to the post-Minko
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bbfc6adf7c90e45d19723150a1e4422
Publikováno v:
Bjerrum-Bohr, N E J, Damgaard, P H & Gomez, H 2019, ' New factorization relations for Yang-Mills amplitudes ', Physical Review D, vol. 99, no. 2, 025014 . https://doi.org/10.1103/PhysRevD.99.025014
Physical Review
Physical Review
A double-cover extension of the scattering equation formalism of Cachazo, He and Yuan (CHY) leads us to conjecture covariant factorization formulas of n-particle scattering amplitudes in Yang-Mills theories. Evidence is given that these factorization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::165cffc2b8f475a2d4e2921ee321ae6b
https://curis.ku.dk/portal/da/publications/new-factorization-relations-for-yangmills-amplitudes(ec659190-6627-4962-92f1-e16fea6d0d44).html
https://curis.ku.dk/portal/da/publications/new-factorization-relations-for-yangmills-amplitudes(ec659190-6627-4962-92f1-e16fea6d0d44).html
Publikováno v:
Physical Review
Bjerrum-Bohr, N E J, Gomez, H & Helset, A 2019, ' New factorization relations for nonlinear sigma model amplitudes ', Physical Review D, vol. 99, no. 4, 045009 . https://doi.org/10.1103/PhysRevD.99.045009
Bjerrum-Bohr, N E J, Gomez, H & Helset, A 2019, ' New factorization relations for nonlinear sigma model amplitudes ', Physical Review D, vol. 99, no. 4, 045009 . https://doi.org/10.1103/PhysRevD.99.045009
We obtain novel factorization identities for non-linear sigma model amplitudes using a new integrand in the CHY double-cover prescription. We find that it is possible write very compact relations using only longitudinal degrees of freedom. We discuss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f47f57cc85b75482e9a1684c486aae76
Publikováno v:
Phys.Rev.Lett.
Phys.Rev.Lett., 2018, 121 (17), pp.171601. ⟨10.1103/PhysRevLett.121.171601⟩
Bjerrum-Bohr, N E J, Damgaard, P H, Festuccia, G, Plante, L & Vanhove, P 2018, ' General Relativity from Scattering Amplitudes ', Physical Review Letters, vol. 121, no. 17, 171601 . https://doi.org/10.1103/PhysRevLett.121.171601
Physical Review Letters
Physical Review Letters, American Physical Society, 2018, 121 (17), pp.171601. ⟨10.1103/PhysRevLett.121.171601⟩
Phys.Rev.Lett., 2018, 121 (17), pp.171601. ⟨10.1103/PhysRevLett.121.171601⟩
Bjerrum-Bohr, N E J, Damgaard, P H, Festuccia, G, Plante, L & Vanhove, P 2018, ' General Relativity from Scattering Amplitudes ', Physical Review Letters, vol. 121, no. 17, 171601 . https://doi.org/10.1103/PhysRevLett.121.171601
Physical Review Letters
Physical Review Letters, American Physical Society, 2018, 121 (17), pp.171601. ⟨10.1103/PhysRevLett.121.171601⟩
We outline the program to apply modern quantum field theory methods to calculate observables in classical general relativity through a truncation to classical terms of the multi-graviton two-body on-shell scattering amplitudes between massive fields.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e62d59c8115d25a763edcc134f3345e
https://hal.archives-ouvertes.fr/hal-01828000
https://hal.archives-ouvertes.fr/hal-01828000
Publikováno v:
Bjerrum-Bohr, N E J, Bourjaily, J L, Damgaard, P H & Feng, B 2016, ' Manifesting color-kinematics duality in the scattering equation formalism ', Journal of High Energy Physics (Online), vol. 2016, no. 1609, 094 . https://doi.org/10.1007/JHEP09(2016)094
Journal of High Energy Physics
Journal of High Energy Physics
We prove that the scattering equation formalism for Yang-Mills amplitudes can be used to make manifest the theory's color-kinematics duality. This is achieved through a concrete reduction algorithm which renders this duality manifest term-by-term. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84711cabb15f3c46d9c691252e524468
https://curis.ku.dk/portal/da/publications/manifesting-colorkinematics-duality-in-the-scattering-equation-formalism(34a1ce68-e7ab-477f-8262-53d1cc837984).html
https://curis.ku.dk/portal/da/publications/manifesting-colorkinematics-duality-in-the-scattering-equation-formalism(34a1ce68-e7ab-477f-8262-53d1cc837984).html
Autor:
Pierre Vanhove, N. E. J. Bjerrum-Bohr
Publikováno v:
International Journal of Modern Physics D. 18:2295-2301
Gravity amplitudes are, via the Kawai–Lewellen–Tye relations intimately linked to products of Yang–Mills amplitudes. Explicitly, this shows up in computations of [Formula: see text] supergravity where the perturbative expansion and ultraviolet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5a57042f871efb52236f2bd52f8122e
https://doi.org/10.1142/s0218271809015874
https://doi.org/10.1142/s0218271809015874